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28007379 = 323111931
BaseRepresentation
bin110101011010…
…1101111010011
31221200220220100
41222311233103
524132214004
62440143443
7460026111
oct152655723
957626810
1028007379
111489a3a4
129467b83
135a5801a
143a10ab1
1526d3739
hex1ab5bd3

28007379 has 6 divisors (see below), whose sum is σ = 40455116. Its totient is φ = 18671580.

The previous prime is 28007363. The next prime is 28007383. The reversal of 28007379 is 97370082.

28007379 is a `hidden beast` number, since 280 + 0 + 7 + 379 = 666.

It is not a de Polignac number, because 28007379 - 24 = 28007363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28007339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1555957 + ... + 1555974.

Almost surely, 228007379 is an apocalyptic number.

28007379 is a deficient number, since it is larger than the sum of its proper divisors (12447737).

28007379 is a wasteful number, since it uses less digits than its factorization.

28007379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111937 (or 3111934 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 28007379 is about 5292.1998261593. The cubic root of 28007379 is about 303.6855698328.

The spelling of 28007379 in words is "twenty-eight million, seven thousand, three hundred seventy-nine".

Divisors: 1 3 9 3111931 9335793 28007379